Do Audio Experience Symphonies leak DC current?

I have similar problem with Symphonies Plus.
I like the sound quality, it is amazing for the price.
Recently, my system produces a humming noise, and this is coming from the Symphonies plus. The reason I can say this is that my cd player (CJ DF-1) has a pair of direct output with a high quality vol. control, and I connected CJ direcly to my Rogue power amp.
They are fine without any noise.

I replaced all 4 tubes of Symphonies plus including the 6x4 rectifier tube, but the same noise is still there.
I am not sure it is due to the DC current leaking or other issues.

I emailed YS to fix this issue and we will see how it goes.

If any others have similar experience, please share here.

Hi all,

I too am considering this preamp. How is the construction of the preamp? is it kinda flimsy casing and so on? This is my first post in this forum. Well, if it's a simple mod of removing a cap, woopy. If it's not built real well, then that is to be considered.

Ray

Hello! Jkimsland.

The humming noise is NOT from DC current leaking.

The cause of the hum noise is 47uf/450v caps at power supply to lost.

you replace the 4 pcs 47uf/ 450V caps at power supply to new item ,that can fix this problem.

If, you need the new 4 pcs 47uf/450v caps.
You can e-mail your address to me.
I will send the caps to you.

Thank you.
Nelson Chui

Hello! Blindman.

Please, you see the News paper at YS-Audio office web site:

http://www.ys-audio.com/news.htm

The problem have solved at August 2003.

Nelson Chui